When it comes to describing someone's shrewd way of doing things, there are many synonyms that come to mind. One such synonym is astute, which refers to someone who is good at making decisions based on their knowledge and experience. Another word that could be used is cunning, which describes someone who is clever in a deceptive or deceitful way. Other synonyms for shrewd include canny, discerning, insightful, intuitive, judicious, perceptive, practical, prudent, and sagacious. Ultimately, shrewdness is a quality that is valued in business and everyday life, as it allows individuals to make smart and informed decisions that lead to success.